Suspension Height Adjustment Timeout
The C0674 code means the vehicle's onboard diagnostic system has detected: Suspension Height Adjustment Timeout. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $300 - $1200 (parts and labor)
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Common Symptoms
- Suspension warning light on
- Ride quality abnormal
- Suspension mode cannot be changed
- Damper does not respond to mode selection
Probable Causes (Ranked by Likelihood)
- Failed adaptive damper actuator Very High
- Damaged damper wiring High
- Suspension mode switch failure Moderate
- Control module fault Low
Step-by-Step Diagnostic Procedure
-
Check adaptive damper operation with scan tool
-
Test damper solenoid resistance
-
Inspect damper wiring for damage
-
Verify suspension mode switch inputs
Frequently Asked Questions
What does code C0674 mean?
C0674 indicates a fault with the suspension height adjustment timeout.
Can I drive with C0674?
Drive carefully at low speeds to a repair shop. Suspension handling may be compromised.
How much does it cost to fix C0674?
Typical repair costs are $300 - $1200 (parts and labor).
Sources
This page is built from documented references. Verify against your own service info before repair work.
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